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Using projected light from four different directions, an app called RRW]

Adam Flaherty

I make cool stuff and write about other people making cool stuff on If you have something you think I should see, send me a tip.



  1. Robert Ely says:

    Absolutely brilliant, Stunning resourcefulness.

  2. is this also working on an iPad 2 ?

    1. Steve Blair says:

      i would think that it would be more accurate on an ipad, since the light sources are created on screen – a bigger screen means the 4 light flashes can be further apart

  3. I love the innovative thinking behind this. Unfortunately, my 3GS iPhone doesn’t have a front-facing camera, so I can’t try it out.

  4. Anonymous says:

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  5. John Conti says:

    Way cool! I bought it immediately. An army of clones of myself will soon be floating out of my Reprap, each in a custom, nearly lifelike position ;-)

    Great link.


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